The
status: no network indicates that there is no connection with the Access Point. This can occur for a number of reasons. Some that I can think of include:
- missing firmware
- an uncleared preexisting wpakey or nwkey
- selecting the wrong WiFi channel
I can exclude firmware, since you stated you can connect to a WPA2 network. I can exclude an uncleared key, since I don't see one in your ifconfig(8) output.
That leaves channel 6, and your -49dB connection, as the likely problem.
Scan the network, pick out a better channel for the Access Point, and set it in your hostname.iwn0 file.